Nut



R. E. H. LOVELACE.

NUT;

APPLICATION FILED IAN.26,1917.

Patentd Jan. 31, 1922.

F IIIITII 40 pressed over and round the flange D. The

* UNITED STATES PATENT OFFICE. I

NUT.

Specification of Letters Patent.

Patented Jan. 31, 1922.

Application filed January 26, 1917. Serial No. 144,683.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARGH 3, 1921, 41 STAT. L,1313.)

HARTE LovnLAoE, a subject of the King of' Great Britain, residing atEnfield, Middlesex, England, have invented new and museful Improvementsin Nuts, of which the following is a specification.

This invention relates to an lmprovement in nuts, or terminals used onbells, dry

cells, and other various electrical apparatus, for the purpose ofclamping down wire connections tightly. These nuts are employed formechanical purposes also.

According to the present invention these nuts, or terminals are made outof sheet metal stamped up to form the exterior shape of a solidnut, orterminal, in the special way or ways as hereindescribed.

This reduces the weight of raw material used and increases the speed ofproduction. The cost of manufacture is thus greatly reduced.

The invention is illustrated in the accompanying drawings in which Fig.1 is a vertical section of the under cup forming a part of the nut. Fig.2 is a plan view of the under cup. Fig. 3 is a vertical section of theupper cup forming the other part of the nut. Fig. 4 is a plan view ofthe upper cup. Fig. 5 shows the upper and lower cups assembled together,one half in vertical section and the other in side view. Fig. 6 is aplan view of the two cups assembled together. Fig. 7 shows analternative design of the cups, vertical side view.

Fig. 8 shows this alternative construction in plan view. Fig. 9 showsalternative constructions.

The cup A is placed opposite the cup B and pressed on to it, the lip Cbeing two cups being pressed together, are then in the form as shown byFig. 5. The holes E and F are stamped in the cups A and B and are tappedwith the desired thread. Hole F may be omitted if desired.

The number of threads may be varied as desired, by varying the thicknessof the sheet metal. For practical purposes one and a half threads ineach hole is usually found sufiicient for strength.

Fig.7 indicates a similar nut, or terminal: but this alternative formhas indentations G. H. I. J. which may be pressed into the lip C andflange D at the time of pressing the two cups together. This arrangementwould serve to prevent any possible movement of the upper and lower cupsafter the operation of pressing together.

The serrations K are pressed into the cup B at the time of pressing thetwo cups together, or the serrating may be done afterwards, in aseparate operation.

In alternative constructions the terminal may consist of a disc C andtwo cups A and B pressed together as shown by Fig. 9.

Or the outer form of the nut itself may be varied as desired; hexagonal,square or the like. These shapes being produced by the shape of thepress 'tool used.

In all the forms the nut has two cupshaped portions, whether theseportions are first made separately and then pressed together or are madeintegral, and the transverse walls of these portions forming the top andbottom of the nut are remote from one another; that is, are spaced apartby the maximum length of the nut. Although each of these walls may onlybe thin and have but a few threads each, yet by being well spaced apartthey ofi'er a long bearing on the threaded bolt or rod on which the nutis screwed.

I claim A nut or terminal for use on bells, dry cells, and other variouselectrical apparatus, for the purpose of clamping down wire connectionstightly, of the character referred to. comprising two cups pressedtogether and each provided with a .hole tapped with the desired threadsaid holes being in alignment and spaced apart.

In witness whereof I have hereunto set my hand in the presence of, twowitnesses.

ROSEMAN EDWARD HARTE LOVELACE. Witnesses RIPLEY' WILSON, GEO. VAN DYNE.

